Organic photodetector arrays with indium tin oxide electrodes patterned using directly transferred metal masks

Xin Xu, Momchil Mihnev, Andre Taylor, Stephen R. Forrest

Research output: Contribution to journalArticle

Abstract

We demonstrate the patterning of indium tin oxide (ITO) electrodes with submicron resolution onto both planar and hemispherical plastic surfaces using a process based on the direct transfer of a metal film etch mask via cold welding. Using this process, we fabricate an organic (copper phthalocyanine/ C60) photodetector focal plane array on a hemispherical surface in an architecture that mimics the size and form of the human eye. The low absorption of the ITO anodes results in an increase in external quantum efficiency by up to 65% in the visible as compared with that of a previously demonstrated photodetector array with semitransparent Au anodes. The maximum photodetector detectivity is 1.25× 1011 cm Hz1/2 W-1.

Original languageEnglish (US)
Article number043313
JournalApplied Physics Letters
Volume94
Issue number4
DOIs
StatePublished - Feb 9 2009

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indium oxides
tin oxides
photometers
masks
electrodes
anodes
cold welding
metals
focal plane devices
metal films
quantum efficiency
plastics
copper

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Organic photodetector arrays with indium tin oxide electrodes patterned using directly transferred metal masks. / Xu, Xin; Mihnev, Momchil; Taylor, Andre; Forrest, Stephen R.

In: Applied Physics Letters, Vol. 94, No. 4, 043313, 09.02.2009.

Research output: Contribution to journalArticle

Xu, Xin ; Mihnev, Momchil ; Taylor, Andre ; Forrest, Stephen R. / Organic photodetector arrays with indium tin oxide electrodes patterned using directly transferred metal masks. In: Applied Physics Letters. 2009 ; Vol. 94, No. 4.
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